1. Contact TAC and ask them to decipher which process is triggering the bug;
2. Reboot without upgrading the IOS;
3. Upgrade the IOS; or
4. Do nothing.
There a chance TAC will tell you to upgrade because the IOS is old, very old. I am suspecting you're hitting a memory buffer bug where the system don't seem to be able to return un-used memory back into the pool. This is very common, particularly with 6500 IOS.
6509_CORE_A#sho ver Cisco IOS Software, s72033_rp Software (s72033_rp-IPSERVICES_WAN-M), Version 12.2(33)SXH6, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2009 by Cisco Systems, Inc. Compiled Thu 15-Oct-09 11:20 by prod_rel_team
ROM: System Bootstrap, Version 12.2(17r)S2, RELEASE SOFTWARE (fc1)
6509_CORE_A uptime is 8 weeks, 21 hours, 46 minutes Uptime for this control processor is 8 weeks, 21 hours, 46 minutes Time since 6509_CORE_A switched to active is 8 weeks, 21 hours, 45 minutes System returned to ROM by s/w reset at @=z<@<^EH ^@P (SP by power-on) System restarted at 10:04:31 CHILE Sun Aug 17 2014 System image file is "disk1:s72033-ipservices_wan-mz.122-33.SXH6.bin"
cisco WS-C6509 (R7000) processor (revision 3.2) with 458720K/65536K bytes of memory. SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache Last reset from power-on 75 Virtual Ethernet interfaces 122 Gigabit Ethernet interfaces 16 Ten Gigabit Ethernet interfaces 1917K bytes of non-volatile configuration memory. 8192K bytes of packet buffer memory.
65536K bytes of Flash internal SIMM (Sector size 512K). Configuration register is 0x2102
Thanks for the output. It confirms to me that the issue is with leaking IDB's. IDB's (Interface Descriptor Blocks) are used to represent any interface, physical or virtual.
The impact of this issue is that we can no longer generate any new IDB's. Therefore, any changes made to a port-channel, or the addition/removal of any interfaces could potentially be prevented. A port flap could potentially induce the Etherchannel(or other interfaces) to stay down permanently.
You can check the same using # show id b and check for Total IDB's in count.
Also go ahead and plan for the software upgrade. As there is a bug associated to this issue and it is resolved in the version 12.2(33)SXi and later.
***Please do nt forget to rate if this info is helpfull.
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